<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
<script>
    var arr = [{
        name: '张三',
        age: 25,
        email: '666@qq.com'
    }, {
        name: '李四',
        age: 21,
        email: '777@qq.com'
    }, {
        name: '赵五',
        age: 27,
        email: '888@qq.com'
    }]

    var obj = {
        email: '123@qq.com',
        score: 80
    }

    var newArr = []

    // 将 arr中的每一个对象 和 obj 进行合并
    for (let key of arr) {
        newArr.push(
            Object.assign({}, key, obj, obj, obj)
        )
    }

    console.log(newArr)
</script>
</body>

</html>
